pimiПриборы и методы измеренийDevices and Methods of Measurements2220-95062414-0473BNTUpimi-185Research ArticleМетоды измерений, контроля, диагностикиMethods of measurements, monitoring, diagnosticsИЗМЕРЕНИЕ ТЕМПЕРАТУРНОГО КОЭФФИЦИЕНТА ПОКАЗАТЕЛЯ ПРЕЛОМЛЕНИЯ МЕТОДОМ ОТКЛОНЕНИЯ ЛАЗЕРНОГО ПУЧКА В СРЕДЕ С ЛИНЕЙНЫМ ГРАДИЕНТОМ ТЕМПЕРАТУРЫTHERMOOPTIC COEFFICIENTS MEASUREMENTS BY A LASER BEAM DEVIATION METHOD FOR THE MEDIUM WITH LINEAR THERMAL GRADIENTЛойкоП. А.LoikoP. A.pimi@bntu.byЮмашевК. В.YumashevK. V.pimi@bntu.byКулешовН. В.KuleshovN. V.pimi@bntu.byПавлюкА. А.PavlyukA. A.pimi@bntu.byНаучно-исследовательский центр оптических материалов и технологий БНТУБеларусьBelarusian National Technical UniversityBelarusБелорусский национальный технический университетБеларусьBelarusian National Technical UniversityBelarusИнститут неорганической химии им. А.В. Николаева Сибирского отделения РАН, НовосибирскRussian Federation201029042015017077Copyright © Лойко П.А., Юмашев К.В., Кулешов Н.В., Павлюк А.А., 20152015Лойко П.А., Юмашев К.В., Кулешов Н.В., Павлюк А.А.Loiko P.A., Yumashev K.V., Kuleshov N.V., Pavlyuk A.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://pimi.bntu.by/jour/article/view/185

Создана экспериментальная установка для определения температурного коэффициента показателя преломления dn/dT методом отклонения лазерного пучка в среде с линейным градиентом температуры. При помощи данной методики измерены величины dn/dT оптически двухосного кристалла калий-гадолиниевого вольфрамата KGd(WO4)2для излучения, поляризованного вдоль главных направлений в кристалле в спектральном диапазоне 0,4–1,06 мкм.

The experimental setup for thermooptic coefficients dn/dT measurements by a laser beam deviation method for the medium with linear thermal gradient was developed. By means of this approach, the dispersion of the dn/dT values in the optically biaxial potassium gadolinium tungstate crystal KGd(WO4)2 was investigated in the 0,4–1,06 μm spectral range for light polarized along the principal directions in the crystal.

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The authors declare that there are no conflicts of interest present.